Prepare for release 5.0.0-RC1

Author: SpertsyanKM

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 5.0.0-RC1
+It contains a lot of changes, which are described in our [migration guide](https://documentation.qonversion.io/v3.1/docs/flutter-5-migration-guide).
+Please, note that future releases may be backward incompatible with release candidates.
+
 ## 4.6.0
 * Added a `source` property to the `Permission` object - use it to know where this permission is originally from - App Store, Play Store, Stripe, etc.
 * Added a method `getNotificationCustomPayload` to get the extra data you've added to automation notifications.

pubspec.yaml

@@ -1,6 +1,6 @@
 name: qonversion_flutter
 description: Flutter plugin to implement in-app subscriptions and purchases. Validate user receipts and manage cross-platform access to paid content on your app. Android & iOS.
-version: 4.6.0
+version: 5.0.0-RC1
 homepage: 'https://qonversion.io'
 repository: 'https://github.com/qonversion/flutter-sdk'